Railway-motor ventilation.



J. D. FOR'RBR.

RAILWAY MOTOR VENTILATION. APPLICATION I'ILBD 1mm; 12, 19111.

.1 075,470. Patented 001.14, 1913. I s-snnm 1.

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To all whom it mag concern: y I

Be it known that I, JOSEPH D. FORRER; a citizen of the United States, and a resident' of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Railway- Motor Ventilation, of which the following is a specification.

My invention relates to dynamo-electric machines and particularly to railway motors, and it has for its object to provide an efficient means of adapting forced ventilation to the above class of motors.

In a forced-draft ventilating system for railway motors, it is desirable to introduce the air into the armature spider in order that the cooling effect may be uniformly distributed throughout the structure. Certain types of motors, however, are so constructed that it is diflicult to introduce the cooling fluid at the desired location on account of the limited space which is available tor the necessary connections.

According to my invention, I utilize the gear case as a means of introducing the cooling fluid and modify its construction by providing an additional chamber, as hereinafter described.

My invention is illustrated in the accompanying drawings, Figure 1 being an end view of a railway motor and its gear case equipped with the aforesaid receiving chamber, and Fig. 2 being a view, partially in section and partially in side elevation, of a portion of the motor and gear case shown in Fig. 1.

Referring to the drawings, in detail, a railway motor 1 is provided with a bearing housing 2 and with a gear case 3, so constructed as to embody within it an air chamber or compartment at which may either be cast as an integral part of the gear case, or be constructed independently and secured. to the case in any suitable manner.

An inlet opening 5 is connected, by a flexible bellows connection 6, to an air supply line 5 which leads to a conveniently located fan or blower (not shown). In the side of the chamber 4, adjacent to the bearing housing, is an opening 7 which registers with a corresponding opening 8 in the bearing housing, an air tight connection being established by means of a rubber gasket 9 and bolts 10 which hold the two members rigidly together;- Anjopeningql-l is prov-ide'd in the 1 inner: wall of the bearing housing which all-o'w-sthe passage of air into a plurality of air passages 12 formed, in a well known manner, between the armature spider l3 and the laminated armature core 14, whence it is distributed throughout the structure by means of ventilating ducts 15.

It will, of course, be understood that modifications of the precise arrangements shown and describedmay be made without departing from the spirit of my invention, and such modification I aim to cover in the appended claims.

I claim as my invention:

1. The combination with a railway motor provided with a bearing housing having an inlet port and outlet ports for the passage of air into the motor, of a gear case associated with said motor and provided with a compartment or chamber having an outlet port that registers with the housing inlet port, and a conduit through which air is forced into the gear case chamber.

2. The combination with a railway motor, of a gear case having an air chamber in open communication with the interior of said motor and means for introducing air from a ventilating system into said air chamber.

3. The combination with a railway motor having a bearing housing provided with inlet and outlet ports, and a gear case provided with a compartment or chamber adapted to deliver air from a ventilating system to the bearing housing.

4. The combination with a railway motor provided with a bearing housing having inlet and outlet ports, of a gear case provided with a compartment having an out let port connected to the housing inlet port, and a supply pipe of a ventilating system connected to the inlet port of the gear case compartment.

5. The combination with a railway motor provided with a bearing housing, and a gear case, of a chamber interposed between said gear case and said bearing housing and provided with an inlet port, and a supply pipe of a ventilating system connected to said inlet port.

6. The combination with a railway motor provided with a bearing housing, of a gear case associated therewith and provided with a separate chamber having an outletv port connected to said chamber, of a supply pipe of a ventilating system connected to the inlet port of the chamber to deliver air to said motor through the bearing housing.

7. The combination With a railway motor provided with a bearing housing having inlet and outlet ports, and a gear case, of a chamber cast integrally With the gear case and secured rigidly to the bearing housing,

10 and a pipe connected to said chamber to sup- JOSEPH D. FORRER.

lVitnesses:

A. L. BRooMALL, B. B. I-IINEs.

Uopies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents Washington, I). 0. 

